Antifriction-bearing



(No Model.)

1?. MOSSBERG. ANTIFRICTION BEARING.

No. 543,262. Patented July 23, 1895.

' To all whom it may concern:

UNITED STATES PATENT OFFICE.

FRANK MOSSBERG, OFATTLEBOROUGH, MASSACHUSETTS.

ANTlFRlCTlON-BEARING.

SPECIFICATION forming part of Letters Patent No. 543,262, dated July 23,189 5. Application filed January 5, 1895- serial No. 533338. (No model.)

Be it known that I, FRANK MOSSBERG, a citizen of the United States,residing at Attleborough, in the county of Bristol and State ofMassachusetts, have invented certain new and useful Improvements inAntifriction- Bearings, of which the followingis a specification.

My invention relates to that class of rollerbearings in which parallelcylindrical rollers are carried by a circular or hollow cylindricalcage; and my invention consists in constructing the parts so as to savestock, secure more accurate fitting, and reduce the cost of manufacture.V

In the accompanying drawings, Figure 1 is a. side view in part sectionof my improved roller-bearing; Fig. 2, an end view, one-half in section,on the line 2, Fig.1. Fig. 3 is a detached sectional view of one of therings, showing also one of the distance-pieces and connecting block andscrew. Fig. 4 is a face view of one of the rings. Fig. 5 is a side viewof one of the bars. Fig. 6 is an endview of one of the bars. Fig. 7 is aside view of one of the rollers. Fig. 8 is a side view in part section,showing a divided bearing. Fig. 9 is an end view of Fig. 8. Fig. 10 is aconnectingring; Fig. 11, an enlarged section of an end bearing; Fig. 12,an enlarged section showing a screw-receiving block and its connectionwith the bars.

The antifriction-rollers e are round rods or cylinders accurately shapedto uniform dimensions and arranged in a circle between the revolvingjournal or shaft and the inner face of its bearing, and in order topreserve their relative positions a cage A is provided consisting,generally, of circular heads or rings and bars extending from one ringto the other and between the rollers and with curved sides correspondingto the curvature of the rollers. Heretofore such cages have been made inmany instances by boring and turning a hollow sleeve or cylinder ofmetal, such boring and turning requiring nice workmanship by skilledoperators and being attended with considerable expense.

To avoid the expensive workmanship heretofore required, I form the cageof rings and bars, which are shaped separately and then securedtogether, thus permitting the bars to be milled to-the proper shape andformed to the rollers and avoiding the necessity of expensive boringheretofore required. The cage may thus be constructed with thesefeatures in different ways. I prefer, however, to cast the bars 0, andthen by means of a millingmachine with a circular cutter accuratelygroove the opposite sides of each bar, as illustrated'in Fig. 6, and Icast-theend ringsb d. The ends of all the bars are preferably firstsecured to one of the rings bybrazing or otherwise, leaving spacesbetweenthe bars which are larger in diameter than the rolls, and theother ring may then be brazed to the opposite ends of the bars afterinserting the rollers in place, but I prefer to connect one of the ringsdetachably to the bars. This may be done by screws passing through thering into threaded openings into the ends of the bars; but to secure abetter bearing for the screws I prefer to make use of-a threadedcylindrical blockf, adapted to screwinto threads in the opposite curvedfaces of adjacent bars, as shown in Fig. 12, the said blockf having athreaded opening to receive a screw g, which passes through an openingin the ring and into the block. Two or three of these blocks and screwstherefor Will serve to secure the ring firmlyin position. If desired,the rollers may have conical ends bearing directly in conical recessesin the inner faces of the rings. In order, however, to avoid thenecessity of replacing the rings whenever the bearings become worn Iprefer to make use of separate bearing-blocks a, each. secured to one ofthe rings at a point to bring it between the ends of adjacent bars 0.Preferably the blocks a are circular and fit nicely the curved faces ofthe bars 0, so as to constitute distance-blocks between them. The blocksa may be secured to the rings in any suitable 1nanner for instance, eachblock may have a stud n adapted .to an opening '12, in the ring and theinner end 9, the cage consists of two sections B B, each sectionconsisting of a series of bars and rollers and end curved pieces b, thepieces of the two sections together constituting a ring. When necessary,there may be three or more sections, the cage thus consisting of two ormore frames supportingtwo or more series of rollers.

Different means may be employed for connecting the sections togetherafter they have been applied to the journal. O-ne means consists ofgrooves t, formed in the faces of the bars 0 and blocks a, as shown inFig. 8, and after the sections are put together upon their journals asplit ring of wire h is placed in each groove, and, if desired, theendsof the ring may be soldered, brazed, or otherwise secured together.I

Nithout limiting myself to the precise construction and arrangement ofparts shown, I claim 1. A roller bearing consisting of a series ofrollers and a frame composed of a series of intermediate bars, end ringsand separate distance pieces secured fixedly between the ends of thebars and the ends of the rollers, and

serving as bearings for the latter substantially as set forth.

2. The combination in a roller bearing, of a series of rollers, separateend rings and bars, and blocks a fitting between the bars and connectedto the rings, substantially as set forth.

3. The combination of the rollers, end rings, bars with grooved sides,blocks fitting the said grooved sides between the bars and provided withstuds projecting'into openings in the rings, substantially as described.

4. In a roller bearing comprising end rings, and a series of groovedbars and intermediate parallel rollers, the combination of threadedcylindrical blocks adapted to screw into.

threads in opposite curved faces of adjacent bars, and means for unitingor securing the rings to the blocks, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANK MOSSBERG.

W'itnesses:

THOMAS W. WILLIAMS, CHARLES M. ROBBINS.

